21220202101122 has 48 divisors (see below), whose sum is σ = 48224404156032. Its totient is φ = 6735797321760.

The previous prime is 21220202101121. The next prime is 21220202101139. The reversal of 21220202101122 is 22110120202212.

It is a happy number.

21220202101122 is a `hidden beast` number, since 21 + 220 + 202 + 101 + 122 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 21220202101095 and 21220202101104.

It is not an unprimeable number, because it can be changed into a prime (21220202101121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 338927904 + ... + 338990507.

It is an arithmetic number, because the mean of its divisors is an integer number (1004675086584).

Almost surely, 2^{21220202101122} is an apocalyptic number.

21220202101122 is an abundant number, since it is smaller than the sum of its proper divisors (27004202054910).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21220202101122 is a wasteful number, since it uses less digits than its factorization.

21220202101122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677918503 (or 677918500 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 21220202101122 its reverse (22110120202212), we get a palindrome (43330322303334).

The spelling of 21220202101122 in words is "twenty-one trillion, two hundred twenty billion, two hundred two million, one hundred one thousand, one hundred twenty-two".